87021054138 has 32 divisors (see below), whose sum is σ = 177306008832. Its totient is φ = 28465243200.

The previous prime is 87021054119. The next prime is 87021054209. The reversal of 87021054138 is 83145012078.

It is a junction number, because it is equal to n+sod(n) for n = 87021054096 and 87021054105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118081 + ... + 433572.

It is an arithmetic number, because the mean of its divisors is an integer number (5540812776).

Almost surely, 2^87021054138 is an apocalyptic number.

87021054138 is an abundant number, since it is smaller than the sum of its proper divisors (90284954694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87021054138 is a wasteful number, since it uses less digits than its factorization.

87021054138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552150.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 87021054138 in words is "eighty-seven billion, twenty-one million, fifty-four thousand, one hundred thirty-eight".